Pipe-bending machine.



J. S. WHEELER. IPIPE BENDING MACHINE. APPLICATION FILED JULY 13, 19|5.

3 SHEETS-SHEET l.

jvwantox JS- f77/ee Kef" W47 HoxmHH n Patented Nov. 28, 1916,.

-J. S. WHEELER. PIPE BENDING MACHINE. APPLICATION FILED JULY 13. |915.

Patented Nov. 28, 1916.

Patented Nov. 28, 1916.

3 SHEETS-SHEET 3- i JOHN S.'WHAEELER, OF DUNSMUIR, CLIFORNA.

A *innemen mea my 1s, `1915. serial no. 39,598.

i To all whom 'it mag/ilconoem:

Be it known that LJomv 'S..,Wnfennuk, a citizen of the United States, 4residing at Dunsmuir, inthe county ofSiskiyou and 5 State of California, have invented certain new and useful Improvements in Pipe-Bend,b

ing Machines?z of which the, following `isa f specificat ion .l y This invention hasl relation .to machines 1o forbendi pipe, rods, bars and the `like into fancilflgl shapes according to the article to be formed and the design to be followed. Y

l y The inventmn provides a machine which may be readily adapted for la varietyof fcurves and `for different sizes of material', y such adaptation/being capable of being easily and quickly effected. 1 l

A further purpose ofthe invention is the provision ofyrneans whereby the material maybe firmly.. secureddurngthe process of ;bending'for shaping, the securing means bei' g cfa natureltobeeasily and conveniently manipulated and to adapt itself within certain limits to different sizes of material.

Vlifth these and other objects in view,

which'will readily appear as ythe nature of Y the invention is better understood, the same.

consists-"in the improved construction and novel arrangement vand combination of parte 3o which will behereinafter fully described and particularlyclaimed. s In the accompanying drawings has been illustrated a simple and preferred form of :the invention, itbeing, however, understood 35 that-no limitation is necessarily made to the precise structuraldetails therein exhibited, `bvuirthat changes, alterations and modifications Within vthe scope of the invention as claimed may be resorted towhen desired.

:"{Referring to the dra\vings,- Figure 1 is atop viewof a pipe bending machine y embodying the invention; Fig. 2 is a front view thereof; Fig. 3 is a sectional elevation, the plane of the section being indicated by theline 3-3 of Fig. 1; Fig. 4; is a section on the line 4-4 of Fig. l; Fig. 5 is a top plan view of an end portion of the machine; Fig.A 6 `is a detail view of an end portion of one of the .clamp operating levers; Fig. 7 is a detail view of the presser piece. Y Corresponding and like parts are referred to the following description and indicated l"in all the views of the drawings by ythe same v)reference characters n y f Y, 'lhemachine which YSpeoication of Iiet'ters Patent.

irma-,Banniere MACHINE.

Patented Nov. 28, 1916.

be of any construction toform a substantial support for the several parts. The frame of the machine embodies an upper plate Q-'and .a lower plate 3, such'plates being vertically e0' 'spaced and adapted to receive between them y forms 4 and 5 which are of similar formation but of different diameters, thereby adapting the` machine for bending the material upon a" greater or less curve. vThe 'forms 4 and 5 65 are located-at opposite ends of the, machine and each preferably consists of a disk which is grooved v,in its outer edge vto form a seat for the work. The shape and sizeof the groove will Idepend upon the cross sectional 70 outline of the material to be sha-peglff" The 'forms 4 and 5 are adaptedto be easily and quickly removed so as to be substituted by others of dii'erent shape or size. A. plurality of clamps are disposed at opposite sides of 75 themachine'for holding the work rmly to prevent possible slipping during the bending operation. These clamps are of like for# 'mationand a single operating )lever may serve as actuating means for opposed clamps. 80 Each of the clamps comprises a fixed jaw l 6 and a movable'jaw 7, the latter being forlnedfwith an arm 8 to which a link 9 is adapted to be adjustably connected, such link having an eye 'l0 atgitsfree end to re- 85 ceive a bolt or pin 11 by means of which the link is conneotedto an operating lever 12.

A The lower end of the operating lever l2 is bifurcateg to receive the linkvl and cach bifurcation is provided upon its outer 'side l 90 with a hub 13 ,which forms a journal means of which the operating lever is mounted in a bearing 14 which is secured to the upper side of the freine. The bearing lll comprises spaced members between 'which 95 the :pivot end of the operating lever l2 is received, eachof the members `lmeiitig formed vwith an opening to refpeive the hub 13. |The bolt,.orV pin, il is arranged to one side of the axis of the hubs 13l and extends across the 100 space formedv between the members comprising the urcate end of the operating le.- ver. VWhen the link 9 is connected to the operating vlever the movable jaw is opened or closed accordingto the direction in which 5.05 the free end of such lever is moved. q y

The jaws 6 and 7 may be slightly` resilient if preferred so as to aiiapt themselves to variations inv the size. of the work to be v clamped. The arm 8 may likewise be resilim 110 ent, thereby holding thevwork rmlyi t all times-by a predetermined Y connected with Athe arm 8 1s threaded and receives a. pair of. nuts 15 between which the arm- 8 is held. By properly adjusting the nutsl the position of the arm 8 may be adjusted so that when the work is firmly gripped the operating lever 12 may occupy a position with the link 9 in line with the axis of the hubs 13, thereby I'esultingin the clamp being locked so as -to `prevent casual release ofthe work. This arrangement of the parts. avoids the use of usual means for holding the operating lever 12 in locked position when the clamp is closed to grip the worl. It will be understood that a single operating lever 12 is 4provided for two clamps which ha vean opposite arrangement. One clamp only is connected at a time with the voperatinglever but if preferred the links of opposed clamps may be attached at the same time so that both-clamps upon opposite sides of the inachine may be operated simi'iltaneouslv. The movable jaws 7 upon the same side of the machine are mounted upopgauixid 16 which is common to all the clamps upon one side. This rod passes through bearings 17 secured in any manner to the frame, a pair of such bearings being provided for each of thc movable jaws and located upon opposite sides thereof to hold tli'e movable jaws in a given position with reference to the fixed jaws. f Y

The presser piece 18 is oblong and formed in its sides with a plurality of longitudinal grooves 19 which constitute seats to receive the work. This presser piece is formed with a plurality of faces and each of the faces has a groove 19 therein. The presser piece 1S may be adjusted to bring any one of its faces in position to Acoperate with a form so as to bend the material therearound. An operating lever 2O has one end bifurcated to embrace the upper and lower sides of the frame to which it is pivotally connected yby means of a bolt or pin 21. Links22 and 23 connect opposite ends of the presser piece 19 to. the lever 20 and an auxiliary lever 24, the latter being pivotally connected to the lever 20. The link 22 and auxiliary lever are adapted to be adjustably `connected with the lever 20, thereby making provision" for proper adjustment of the presser piece to suit the work and the selected form. kA Fearing 25 carried by the lever 24 is adapted engage a side of the presser piece 18 to properly adjust the saine with reference to the work. The bearing 25 has the end adapted to engage the presser piece 18 made round and such bearing is preferably formed' separate from the lever 24 and attached thereto although such arrangement is not essential. Tligalevers 20 and 24, to` vgether with the presser piece 18,'bearing 25 end of the link 9 and links 22 and 23, constitute the shaping l i 'means of a curved bur 26 which may be attaelied to the frame in any manner.'

In the modification shown in Fig. 5 the form 27 has its active portion curved but such form is not necessarily circular. The form may be attached to plates 28 which in turn are-adapted to be securedY to the 'frame of the machine in any manner. i Ali,

operating lever is mounted upon the plates 28 in the manner liereinbcfoi'e described-and is adapted toy cooperate with jaws in the manner stated for holding the work; In the operation of the machine the work to bc bent is secured to one side of the machine 0i' the other as may be desired and the end to be bent about the form is engaged by means of the presser piece 18 and by proper manipulation oit' the levers 20 and 24 they end of the work projecting beyond the form is bent about such form, the grec of curvature being determined by the curved ed e and diameter of the `form. By shifting the work from one side o f the machine to the other or from one end of the machine to the opposite end of the machine and by placing orms of different 'size and shape in position the work may be caused to assume various curves according to the designl and configuration of the article to be constructed. f Having thus described the invention, what is claimed as new is i l 1. In a. machine of. the character described,l a work-holder comprising coperat ing jaws, one of suohjaws being movable, an operating' lever having an end portion bifurcated kand provided with hubs, a bearing having such hubs kmounted therein, and connecting means for the eccentric connection 2. In a machine of the' character demovable jaw having with the hubs and passing between the bifurcations of the lever.

shape and de-` i scribed, a work-holder comprising copera't" ing jaws, an operating lever having an end portion bifurcated a'nd having the bifurca' tions formed on the outer sides with hubs, a bearing receiving such hubs, and a connection lbetween the operating lever and movable jaw, such connection passing between the bifurcations of the lever andhaving eccentric connection therewith.

In testimony whereof. I aix in signature.`

JOHN S. WHEELE [n 9.] 

